Corpus ID: 2292209

A dual-compensated charge pump with reduced current mismatch

  title={A dual-compensated charge pump with reduced current mismatch},
  author={D. Lee and Jeong-Kwang Lee and Hang-Geun Jeong},
  • D. Lee, Jeong-Kwang Lee, Hang-Geun Jeong
  • Published 2010
  • Engineering
  • The charge pump in a phase-locked loop is a key element in determining reference spurs of the VCO output signal. To reduce reference spurs, the current mismatch in the charge pump must be minimized. This paper presents a dual compensation method to reduce the current mismatch. Current matching characteristics can be achieved with less than 0.15% difference in the pump current over the charge pump output voltage range of 0.25-1.45V at 1.8V. The proposed charge pump was realized in a 0.18µm CMOS… CONTINUE READING
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